If you are not in a hurry, you might want to wait until October, when the second edition of Practical Lock Picking will be available. The first edition was a nice read, so it's most likely the second one will be even better. However, as ajohnson said, lock picking is really something you "need to practice and learn to feel".

Check to see if there's a local TOOOL or Lock Sport International (LSI) group near you. Easiest way is to go to a meeting and get hands on learnin'. If there are no groups local to you, then see everything above this post.

That's excellent, they should give you good learnin' from the get go. The last piece of advice I'll give is, don't learn to pick on a cut away. Use it to understand the inner workings of a/the lock, but te art of picking is in the feel, and if you rely on your eyes as you learn, you'll be at a disadvantage.